Water-heater



(No Model.)

K. McDONAL-D'.

Water-Heater. I No.'2 28 2() 8-; Patented June 1, 1880.

WITNESS s j L L25; 5 J M ATTORNEYS.

STATES KENNETH MCDONALD, or PORTLAND, MAINE.

WATER-H EATER.

SPECIFICATION forming part of Letters Patent No. 228,208, dated June 1,1880. Application filed March 25, 1880. (No model.)

To all whom it may concern Be it known that I, KENNETH MCDONALD, ofPortland, in the county of Cumberland and State of Maine, have inventedcertain new and useful Improvements in Heaters; and I do hereby declarethat the following is a full, clear, and exact description of theinvention, which will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

Figure 1 is a perspective view. Fig. 2 is a vertical sectional view.Fig. 3 is a horizontal sectional view; and Fig. at is a detail view, inperspective, of the grate.

Corresponding parts in the several figures are denoted by like lettersof reference.

This invention relates to water-heaters; and it consistsincertainimprovements in the construction of the same, which will behereinafter fully described, and particularly pointed out in the claim.

In the drawings hereto annexed, A represents the cast-iron base, whichforms the ashpit, and which supports the body B of the heater. Thelatter consists of two cylinders, C D, of boiler-iron, connected at thetop and bottom by wrought-iron rings E, sufficient space being leftbetween the two cylinders to form the water-reservoir.F.

In the outer cylinder, 0, closely adjoining the connecting-rings E, arefitted pipes G G, for the admission and exit of cold and hot water orsteam.

The inner cylinder, D, is provided some distance above the base with twoor more rows of pipes, H H, the ends of which are closed, and whichextend into the interior of the said cylinder, forming the fire-pot.

Supported upon the base below the firepot is a cross-bar, I, whichcarries the grate J. The latter is provided with a central pivot, K,passing through an eye, L, in the cross-bar, and having a centralvertical opening, M.

Cogs N, formed upon the under side of the rim of the grate, engage apinion, 0, upon a shaft, P, mounted in the side of the base, and capableof being turned by a wrench or handle, Q.

The cross-bar I, upon which the grate is supported, may also be rockedby means of a suitable wrench, thus tilting and dumping the grate.

The outer cylinder of the heater is incased by a suitable shell orcovering, R, of sheet metal, the top or bonnet of which is provided witha door, through which the fire may be fed. Suitable provision is alsomade for carrying off the products of combustion.

From the foregoing description, taken in connection with the drawingshereto annexed, the operation and advantages will be readily understood.

The grate'may be rotated by the mechanism described, thus causing thetubes projecting from the inner cylinder into the lire-pot to break upthe fire. It may also be shaken or dumped at will. 7

Owing to the central opening in the pivot there is a central draft, andashes are prevented from accumulating at this point, where there isleast motion when the grate is shaken or turned The tubes which extendfrom the inner cylinder into the fire-pot expose the-water to thegreatest possible heat.

Finally, the construction of my improved heater is extremely simple,inexpensive, and durable.

Two cylinders, connected by rings at the top and bottom to forma-water-reservoir between, have been heretofore employedin steamheaters,and also solid projections for breaking up fuel in stoves using rotarygrates are known. Neither of these constructions is broadly claimed inthis specification.

Having thus described my invention, I claim and desire to-secure byLetters Patent of the United States The combination of the base A,rocking cross-bar I, having central eye, L, grate J, havin gvertically-perforated pivot K and cogs N, and the pinion O, foroperating said grate, with the water-reservoir, constructed as hereindescribed, and having tubes H H extending into the fire-pot, as setforth.

In testimony that I claim the foregoing as my own 1 have hereto affixedmy signature in presence of two witnesses.

KENNETH MCDONALD Witnesses LORENZO TAYLOR, WM. H. JERRIS.

